fix: add _from, _resolved back to package.json

closes #42

README.md

@@ -139,27 +139,27 @@ Two rules:
 
 e.g.:
 
-- app: `{ "dependencies": { "debug": "2.2.0", "ms": "0.5.1" } }` (root)
+- app: `{ "dependencies": { "debug": "2.2.0" } }` (root)
 - [email protected]: `{ "dependencies": { "ms": "0.7.1" } }`
 
 ```bash
 app/
+├── package.json
 └── node_modules/
     ├── .npminstall/
     │   ├── debug/
     │   │   └── 2.2.0/
-    │   │       └── debug/
-    │   │           └──  node_modules/
+    │   │       └── debug
+    │   │           ├── package.json
+    │   │           └── node_modules/
     │   │               └── ms -> ../../../../ms/0.7.1/ms
     │   ├── ms/
-    │   │   ├── 0.5.1/
-    │   │   │   └── ms/
     │   │   └── 0.7.1/
-    │   │       └── ms/
+    │   │       └── ms
+    │   │           └── package.json
     │   └── node_modules/
     │       └── ms -> ../ms/0.7.1/ms
-    ├── debug -> .npminstall/debug/2.2.0/debug
-    └── ms -> .npminstall/ms/0.5.1/ms
+    └── debug -> .npminstall/debug/2.2.0/debug
 ```
 
 `[email protected]` is root package, won't create link at `app/node_modules/.npminstall/node_modules/debug@`.

lib/download/git.js

@@ -15,8 +15,8 @@
 const path = require('path');
 const uuid = require('node-uuid');
 const chalk = require('chalk');
-const utils = require('../utils');
 const runscript = require('runscript');
+const utils = require('../utils');
 
 module.exports = function* (pkg, options) {
   options.gitPackages++;
@@ -26,6 +26,12 @@ module.exports = function* (pkg, options) {
   yield utils.mkdirp(cloneDir);
   try {
     yield clone(gitInfo.url, gitInfo.branch, cloneDir, options);
+    const commit = yield getLastCommitHash(cloneDir);
+    const resolved = gitInfo.url + '#' + commit;
+    yield utils.addMetaToJSONFile(path.join(cloneDir, 'package.json'), {
+      _from: pkg.name ? `${pkg.name}@${gitInfo.fullUrl}` : gitInfo.fullUrl,
+      _resolved: resolved,
+    });
     return yield utils.copyInstall(cloneDir, options);
   } catch (err) {
     throw new Error(`[${pkg.name}@${pkg.rawSpec}]: ${err.message}`);
@@ -36,26 +42,27 @@ module.exports = function* (pkg, options) {
 };
 
 function parseGitInfo(pkg) {
-  let url;
+  let fullUrl;
   if (pkg.type === 'git') {
-    url = pkg.spec;
+    fullUrl = pkg.spec;
   } else {
     // try https git url first
     if (pkg.hosted.httpsUrl) {
       // git+https://github.com/node-modules/pedding.git#0.0.3
-      url = pkg.hosted.httpsUrl.replace('git+', '');
+      fullUrl = pkg.hosted.httpsUrl.replace('git+', '');
     } else if (pkg.hosted.gitUrl) {
       // git://github.com/node-modules/pedding.git#0.0.3
-      url = pkg.hosted.gitUrl;
+      fullUrl = pkg.hosted.gitUrl;
     } else {
-      url = pkg.hosted.ssh;
+      fullUrl = pkg.hosted.ssh;
     }
   }
   const branchReg = /#(.*)$/;
-  const r = branchReg.exec(url);
+  const r = branchReg.exec(fullUrl);
   const branch = r && r[1] ? r[1] : 'master';
-  url = url.replace(branchReg, '');
+  const url = fullUrl.replace(branchReg, '');
   return {
+    fullUrl,
     url,
     branch,
   };
@@ -72,3 +79,16 @@ function* clone(url, branch, target, options) {
     ],
   });
 }
+
+function* getLastCommitHash(target) {
+  const script = `git log -1 --format="%H"`;
+  const stdio = yield runscript(script, {
+    cwd: target,
+    stdio: [
+      'ignore',
+      'pipe',
+      'inherit',
+    ],
+  });
+  return stdio.stdout && stdio.stdout.toString().trim() || '';
+}

lib/download/npm.js

@@ -93,6 +93,12 @@ function* download(pkg, options) {
   const stream = yield getTarballStream(pkg, options);
   yield checkShasumAndUngzip(ungzipDir, stream, pkg);
   yield fs.writeFile(donefile, Date());
+
+  yield utils.addMetaToJSONFile(path.join(ungzipDir, 'package.json'), {
+    _from: `${pkg.name}@${pkg.version}`,
+    _resolved: pkg.dist.tarball,
+  });
+
   options.cache[key].done = true;
   options.events.emit(key);
   options.registryPackages++;

lib/download/remote.js

@@ -28,6 +28,10 @@ module.exports = function* (pkg, options) {
   yield utils.mkdirp(ungzipDir);
   try {
     yield utils.unpack(readstream, ungzipDir);
+    yield utils.addMetaToJSONFile(path.join(ungzipDir, 'package.json'), {
+      _from: pkg.name ? `${pkg.name}@${remoteUrl}` : remoteUrl,
+      _resolved: remoteUrl,
+    });
     return yield utils.copyInstall(ungzipDir, options);
   } catch (err) {
     throw new Error(`[${pkg.name}@${pkg.rawSpec}]: ${err.message}`);

lib/utils.js

@@ -30,6 +30,14 @@ exports.readJSON = function* readJSON(filepath) {
   return JSON.parse(content);
 };
 
+exports.addMetaToJSONFile = function*(filepath, meta) {
+  const pkg = yield exports.readJSON(filepath);
+  for (const key in meta) {
+    pkg[key] = meta[key];
+  }
+  yield fs.writeFile(filepath, JSON.stringify(pkg, null, 2));
+};
+
 exports.mkdirp = function mkdirp(dir, mod) {
   return new Promise((resolve, reject) => {
     _mkdirp(dir, mod, err => err ? reject(err) : resolve());

package.json

@@ -36,7 +36,7 @@
     "node-uuid": "~1.4.7",
     "npm-package-arg": "~4.1.0",
     "rimraf": "~2.5.1",
-    "runscript": "~1.0.0",
+    "runscript": "~1.1.0",
     "semver": "~5.1.0",
     "tar": "~2.2.1",
     "urllib": "~2.7.1",

test/fixtures/packageMeta/package.json

@@ -0,0 +1,9 @@
+{
+  "name": "packageMeta",
+  "dependencies": {
+    "debug": "2.2.0",
+    "a": "*",
+    "pedding": "http://registry.cnpmjs.org/pedding/download/pedding-1.0.0.tgz",
+    "bytes": "https://github.com/visionmedia/bytes.js.git"
+  }
+}

test/index.test.js

@@ -98,4 +98,43 @@ describe('test/index.test.js', function() {
     const v1 = yield readJSON(path.join(tmp, 'node_modules', 'pedding', 'package.json'));
     assert.equal(v1.version[0], '1');
   });
+
+  describe('_from, _resolved in package.json', function() {
+    const root = path.join(__dirname, 'fixtures', 'packageMeta');
+
+    function cleanup() {
+      rimraf.sync(path.join(root, 'node_modules'));
+    }
+
+    beforeEach(cleanup);
+    afterEach(cleanup);
+
+    it('should add _from, _resolved to package.json', function*() {
+      yield npminstall({
+        root: root,
+      });
+      // node_modules/.npminstall/node_modules/ms should exists
+      assert(yield fs.exists(path.join(root, 'node_modules', '.npminstall', 'node_modules', 'ms')));
+      // node_modules/.npminstall/node_modules/debug should not exists
+      assert(!(yield fs.exists(path.join(root, 'node_modules', '.npminstall', 'node_modules', 'debug'))));
+      assert(yield fs.exists(path.join(root, 'node_modules', 'pedding')));
+
+      const debugPkg = yield readJSON(path.join(root, 'node_modules', 'debug', 'package.json'));
+      assert.equal(debugPkg._from, '[email protected]');
+      assert(debugPkg._resolved);
+
+      const aPkg = yield readJSON(path.join(root, 'node_modules', 'a', 'package.json'));
+      assert(/^a@\d+\.\d+\.\d+$/.test(aPkg._from), aPkg._from);
+      assert(aPkg._resolved);
+
+      const peddingPkg = yield readJSON(path.join(root, 'node_modules', 'pedding', 'package.json'));
+      assert.equal(peddingPkg._from, 'pedding@http://registry.cnpmjs.org/pedding/download/pedding-1.0.0.tgz');
+      assert.equal(peddingPkg._resolved, 'http://registry.cnpmjs.org/pedding/download/pedding-1.0.0.tgz');
+
+      const bytesPkg = yield readJSON(path.join(root, 'node_modules', 'bytes', 'package.json'));
+      assert.equal(bytesPkg._from, 'bytes@https://github.com/visionmedia/bytes.js.git');
+      assert(/^https:\/\/github\.com\/visionmedia\/bytes\.js\.git#\w{40}$/.test(bytesPkg._resolved), bytesPkg._resolved);
+    });
+  });
+
 });